go to f'ing Smoothie King and ask for "THE STUFF", it comes in a pill or in a drink.. you follow instructions and it coats shit... and your clean... a little pricey but i heard it works... ive heard cranberry juice works.. pickle juice works.... lots and lots of water.. will work if you have a good amount of time.. or the piss in a cup thing.... You could also put 2-3 drops of bleach in... but thas a little risky.. umm... y/w?